支座嵌固式与可拆卸式防撞柱撞击试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (14) : 23-32.

论文

支座嵌固式与可拆卸式防撞柱撞击试验研究

王银1，杜咏1，J.Y. Richard Liew1, 2, 王彤云2

作者信息 +

Experimental study on bollards with fixed or detachable supports under impact

WANG Yin1，DU Yong1，J.Y.Richard Liew1,2，WANG Tongyun2

Author information +

文章历史 +

摘要

防撞柱主要用于建筑物防恐体系中，有效降低大型机动车对建筑物和密集人群安全的冲撞伤害。本文设计了一种支座可拆卸式钢管混凝土防撞柱，并与支座嵌固式钢管混凝土防撞柱的撞击性能进行了试验对比。分别对7根支座嵌固式和6根支座可拆卸式防撞柱进行了水平撞击试验，获得了防撞柱撞击动态视频、撞击力—时程曲线和侧向位移—时程曲线。基于试验结果，对比分析了水平冲击荷载作用下的不同柱脚支座类型防撞柱的运动过程和抗冲击性能，以及抗侧移刚度对防撞柱抗冲击性能的影响。结果表明，相同撞击速度和抗侧移刚度条件下，支座可拆卸式防撞柱抗冲击性能优于嵌固式防撞柱。

Abstract

The anti-ram bollard is mainly used in the anti-terrorism system, which can reduce the damage on buildings and crowds due to the vehicle impact.A new type of detachable concrete filled steel tube anti-ram bollard was designed and its impact resistance was compared with that of the fixed anti-ram bollard by experiments.6 detachable anti-ram bollards (DAB) and 7 fixed anti-ram bollards (FAB) were tested under horizontal impact.The collision video, the impact force time-history curves and the lateral displacement time-history curves were obtained.The movement and the impact resistance of the bollard with different supports under horizontal impact loading were analyzed based on the test results, and the impact resistance of bollards with different lateral stiffness was studied.The results show that the property of the DAB is better than the FAB at the same impact velocity and the same lateral stiffness.

导出引用

王银1，杜咏1，J.Y. Richard Liew1, 2, 王彤云2. 支座嵌固式与可拆卸式防撞柱撞击试验研究[J]. 振动与冲击, 2019, 38(14): 23-32

WANG Yin1，DU Yong1，J.Y.Richard Liew1,2，WANG Tongyun2. Experimental study on bollards with fixed or detachable supports under impact[J]. Journal of Vibration and Shock, 2019, 38(14): 23-32

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